static void setup_framebuffer(const GrGLInterface* gl, int screenWidth, int screenHeight) {
//Setup framebuffer
GrGLuint texture;
GR_GL_CALL(gl, PixelStorei(GR_GL_UNPACK_ROW_LENGTH, 0));
GR_GL_CALL(gl, PixelStorei(GR_GL_PACK_ROW_LENGTH, 0));
GR_GL_CALL(gl, GenTextures(1, &texture));
GR_GL_CALL(gl, ActiveTexture(GR_GL_TEXTURE15));
GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, texture));
GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_MAG_FILTER, GR_GL_NEAREST));
GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_MIN_FILTER, GR_GL_NEAREST));
GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_WRAP_S, GR_GL_CLAMP_TO_EDGE));
GR_GL_CALL(gl, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_WRAP_T, GR_GL_CLAMP_TO_EDGE));
GR_GL_CALL(gl, TexImage2D(GR_GL_TEXTURE_2D,
0, //level
GR_GL_RGBA8, //internal format
screenWidth, // width
screenHeight, // height
0, //border
GR_GL_RGBA, //format
GR_GL_UNSIGNED_BYTE, // type
NULL));
// bind framebuffer
GrGLuint framebuffer;
GR_GL_CALL(gl, BindTexture(GR_GL_TEXTURE_2D, 0));
GR_GL_CALL(gl, GenFramebuffers(1, &framebuffer));
GR_GL_CALL(gl, BindFramebuffer(GR_GL_FRAMEBUFFER, framebuffer));
GR_GL_CALL(gl, FramebufferTexture2D(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
GR_GL_TEXTURE_2D,
texture, 0));
GR_GL_CALL(gl, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
GR_GL_CALL(gl, Viewport(0, 0, screenWidth, screenHeight));
}
GrGLint GLTestContext::createTextureRectangle(int width, int height, GrGLenum internalFormat,
GrGLenum externalFormat, GrGLenum externalType,
GrGLvoid* data) {
if (!(kGL_GrGLStandard == fGL->fStandard && GrGLGetVersion(fGL) >= GR_GL_VER(3, 1)) &&
!fGL->fExtensions.has("GL_ARB_texture_rectangle")) {
return 0;
}
if (GrGLGetGLSLVersion(fGL) < GR_GLSL_VER(1, 40)) {
return 0;
}
GrGLuint id;
GR_GL_CALL(fGL, GenTextures(1, &id));
GR_GL_CALL(fGL, BindTexture(GR_GL_TEXTURE_RECTANGLE, id));
GR_GL_CALL(fGL, TexParameteri(GR_GL_TEXTURE_RECTANGLE, GR_GL_TEXTURE_MAG_FILTER,
GR_GL_NEAREST));
GR_GL_CALL(fGL, TexParameteri(GR_GL_TEXTURE_RECTANGLE, GR_GL_TEXTURE_MIN_FILTER,
GR_GL_NEAREST));
GR_GL_CALL(fGL, TexParameteri(GR_GL_TEXTURE_RECTANGLE, GR_GL_TEXTURE_WRAP_S,
GR_GL_CLAMP_TO_EDGE));
GR_GL_CALL(fGL, TexParameteri(GR_GL_TEXTURE_RECTANGLE, GR_GL_TEXTURE_WRAP_T,
GR_GL_CLAMP_TO_EDGE));
GR_GL_CALL(fGL, TexImage2D(GR_GL_TEXTURE_RECTANGLE, 0, internalFormat, width, height, 0,
externalFormat, externalType, data));
return id;
}
GL_APICALL void GL_APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels)
{
CONTEXT_EXEC(TexImage2D(target, level, internalformat, width, height, border, format, type, pixels));
}
bool SkNativeSharedGLContext::init(const int width, const int height) {
if (fGL) {
fGL->unref();
this->destroyGLContext();
}
fGL = this->createGLContext();
if (fGL) {
const GrGLubyte* temp;
GrGLBinding bindingInUse = GrGLGetBindingInUse(this->gl());
if (!fGL->validate(bindingInUse) || !fExtensions.init(bindingInUse, fGL)) {
fGL = NULL;
this->destroyGLContext();
return false;
}
SK_GL_RET(*this, temp, GetString(GR_GL_VERSION));
const char* versionStr = reinterpret_cast<const char*>(temp);
GrGLVersion version = GrGLGetVersionFromString(versionStr);
// clear any existing GL erorrs
GrGLenum error;
do {
SK_GL_RET(*this, error, GetError());
} while (GR_GL_NO_ERROR != error);
SK_GL(*this, GenFramebuffers(1, &fFBO));
SK_GL(*this, BindFramebuffer(GR_GL_FRAMEBUFFER, fFBO));
SK_GL(*this, GenTextures(1, &fTextureID));
SK_GL(*this, BindTexture(GR_GL_TEXTURE_2D, fTextureID));
SK_GL(*this, TexImage2D(GR_GL_TEXTURE_2D, 0,
GR_GL_RGBA,
width, height, 0,
GR_GL_RGBA, GR_GL_UNSIGNED_BYTE,
NULL));
SK_GL(*this, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_WRAP_S, GR_GL_CLAMP_TO_EDGE));
SK_GL(*this, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_WRAP_T, GR_GL_CLAMP_TO_EDGE));
SK_GL(*this, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_MAG_FILTER, GR_GL_NEAREST));
SK_GL(*this, TexParameteri(GR_GL_TEXTURE_2D, GR_GL_TEXTURE_MIN_FILTER, GR_GL_NEAREST));
SK_GL(*this, FramebufferTexture2D(GR_GL_FRAMEBUFFER,
GR_GL_COLOR_ATTACHMENT0,
GR_GL_TEXTURE_2D,
fTextureID, 0));
SK_GL(*this, GenRenderbuffers(1, &fDepthStencilBufferID));
SK_GL(*this, BindRenderbuffer(GR_GL_RENDERBUFFER, fDepthStencilBufferID));
// Some drivers that support packed depth stencil will only succeed
// in binding a packed format an FBO. However, we can't rely on packed
// depth stencil being available.
bool supportsPackedDepthStencil;
if (kES2_GrGLBinding == bindingInUse) {
supportsPackedDepthStencil = this->hasExtension("GL_OES_packed_depth_stencil");
} else {
supportsPackedDepthStencil = version >= GR_GL_VER(3,0) ||
this->hasExtension("GL_EXT_packed_depth_stencil") ||
this->hasExtension("GL_ARB_framebuffer_object");
}
if (supportsPackedDepthStencil) {
// ES2 requires sized internal formats for RenderbufferStorage
// On Desktop we let the driver decide.
GrGLenum format = kES2_GrGLBinding == bindingInUse ?
GR_GL_DEPTH24_STENCIL8 :
GR_GL_DEPTH_STENCIL;
SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER,
format,
width, height));
SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_DEPTH_ATTACHMENT,
GR_GL_RENDERBUFFER,
fDepthStencilBufferID));
} else {
GrGLenum format = kES2_GrGLBinding == bindingInUse ?
GR_GL_STENCIL_INDEX8 :
GR_GL_STENCIL_INDEX;
SK_GL(*this, RenderbufferStorage(GR_GL_RENDERBUFFER,
format,
width, height));
}
SK_GL(*this, FramebufferRenderbuffer(GR_GL_FRAMEBUFFER,
GR_GL_STENCIL_ATTACHMENT,
GR_GL_RENDERBUFFER,
fDepthStencilBufferID));
SK_GL(*this, Viewport(0, 0, width, height));
SK_GL(*this, ClearStencil(0));
SK_GL(*this, Clear(GR_GL_STENCIL_BUFFER_BIT));
SK_GL_RET(*this, error, GetError());
GrGLenum status;
SK_GL_RET(*this, status, CheckFramebufferStatus(GR_GL_FRAMEBUFFER));
if (GR_GL_FRAMEBUFFER_COMPLETE != status ||
GR_GL_NO_ERROR != error) {
fFBO = 0;
fTextureID = 0;
fDepthStencilBufferID = 0;
fGL->unref();
fGL = NULL;
this->destroyGLContext();
return false;
} else {
return true;
}
}
return false;
}
